fuzzy_operators.bmx

Rem
	Copyright (c) 2010 Christiaan Kras
	
	Permission is hereby granted, free of charge, to any person obtaining a copy
	of this software and associated documentation files (the "Software"), to deal
	in the Software without restriction, including without limitation the rights
	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	copies of the Software, and to permit persons to whom the Software is
	furnished to do so, subject to the following conditions:
	
	The above copyright notice and this permission notice shall be included in
	all copies or substantial portions of the Software.
	
	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	THE SOFTWARE.
End Rem

Rem
	bbdoc: a fuzzy AND operator type
	about: Type to provider the fuzzy AND operator to be used in the creation of a fuzzy rule base
End Rem
Type TFzAND Extends TFuzzyTerm
	'an instance of this class may AND together up to 4 terms
	Field m_Terms:TList
	
	Rem
		bbdoc:
	End Rem
	Method New()
		Self.m_Terms = New TList
	End Method
	
	Rem
		bbdoc: Creates AND operator
	End Rem
	Method Create:TFzAND(ops:TFuzzyTerm[])
		For Local op:TFuzzyTerm = EachIn ops
			Self.m_Terms.AddLast(op.Clone())
		Next
		Return Self
	End Method
	
	Rem
		bbdoc: Clones AND operator
	End Rem
	Method Clone:TFuzzyTerm()
		Local term:TFzAND = New TFzAND
		term.m_Terms = Self.m_Terms.Copy()
		Return term
	End Method
	
	Rem
		bbdoc: the AND operator returns the minimum DOM of the sets it is operating on
	End Rem
	Method GetDOM:Double()
		Local smallest:Double = 10 ^ 308
		For Local curTerm:TFuzzyTerm = EachIn Self.m_Terms
			If curTerm.GetDOM() < smallest
				smallest = curTerm.GetDOM()
			End If
		Next
		Return smallest
	End Method
	
	Rem
		bbdoc: Clears DOM
	End Rem
	Method ClearDOM()
		For Local curTerm:TFuzzyTerm = EachIn Self.m_Terms
			curTerm.ClearDOM()
		Next
	End Method
	
	Rem
		bbdoc: 
	End Rem
	Method ORwithDOM(val:Double)
		For Local curTerm:TFuzzyTerm = EachIn Self.m_Terms
			curTerm.ORwithDOM(val)
		Next
	End Method
End Type


Rem
	bbdoc: Create AND operator with any number of terms
	about: This is a shortcut to New TFzAND.Create(ops)
End Rem
Function FzAND:TFzAND(ops:TFuzzyTerm[])
	Return New TFzAND.Create(ops)
End Function

Rem
	bbdoc: a fuzzy OR operator type
	about: Type to provider the fuzzy OR operator to be used in the creation of a fuzzy rule base
End Rem
Type TFzOR Extends TFuzzyTerm
	'an instance of this class may OR together up to 4 terms
	Field m_Terms:TList
	
	Rem
		bbdoc:
	End Rem
	Method New()
		Self.m_Terms = New TList
	End Method
	
	Rem
		bbdoc: Creates OR operator
	End Rem
	Method Create:TFzOR(ops:TFuzzyTerm[])
		For Local op:TFuzzyTerm = EachIn ops
			Self.m_Terms.AddLast(op.Clone())
		Next
		Return Self
	End Method
	
	Rem
		bbdoc: Clones OR operator
	End Rem
	Method Clone:TFuzzyTerm()
		Local term:TFzOR = New TFzOR
		term.m_Terms = Self.m_Terms.Copy()
		Return term
	End Method
	
	Rem
		bbdoc: the OR operator returns the maximum DOM of the sets it is operating on
	End Rem
	Method GetDOM:Double()
		Local largest:Double = -(10 ^ -38)
		For Local curTerm:TFuzzyTerm = EachIn Self.m_Terms
			If curTerm.GetDOM() > largest
				largest = curTerm.GetDOM()
			End If
		Next
		Return largest
	End Method
	
	Rem
		bbdoc: Clears DOM
	End Rem
	Method ClearDOM()
		Assert 0, "TFzOr.ClearDOM: invalid context"
	End Method
	
	Rem
		bbdoc: 
	End Rem
	Method ORwithDOM(val:Double)
		Assert 0, "TFzOr.ORwithDOM: invalid context"
	End Method
End Type

Rem
	bbdoc: Create OR operator with any number of terms
	about: This is a shortcut to New TFzOR.Create(ops)
End Rem
Function FzOR:TFzOR(ops:TFuzzyTerm[])
	Return New TFzOR.Create(ops)
End Function